Video: Qhov ntim thiab qhov chaw yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov chaw saum npoo thiab ntim yog xam rau tej yam peb-dimensional geometrical duab. Cov nto thaj tsam ntawm tej yam khoom muab yog tus cheeb tsam them los yog cheeb tsam occupied los ntawm nto ntawm qhov khoom. Qhov twg ntim yog tus nqi ntawm qhov chaw muaj nyob rau hauv ib yam khoom. Txhua yam nws muaj nws thaj chaw saum npoo zoo li ntim.
Ib sab ntawm no, puas yog qhov ntim thiab qhov chaw saum npoo yog tib yam?
Qhov chaw saum npoo yog qhov sum ntawm thaj chaw ntawm tag nrho cov ntsej muag ntawm lub cev muaj zog. Nws yog ntsuas nyob rau hauv square units. Ntim yog tus naj npawb ntawm cubic units uas ua kom muaj ib daim duab.
Qhov thib ob, tus qauv rau ntim yog dab tsi? Xam Volume Tus formula kom pom lub ntim muab cov ntev los ntawm qhov dav los ntawm qhov siab . Qhov xwm zoo rau ib lub voos xwmfab yog tias qhov ntsuas ntawm txhua qhov ntev yog tib yam. Yog li ntawd, koj yuav multiply ntev ntawm ib sab peb zaug. Qhov no tshwm sim hauv cov qauv: Volume = sab * sab * sab.
Ib yam li ntawd, nws raug nug, thaj chaw saum npoo thiab qhov ntim ntawm lub voos xwmfab yog dab tsi?
Sab ntev ntawm lub kub yog 8m. Tam sim no siv tus nqi no los txiav txim qhov ntim siv cov formula V = s3. Cov ntim ntawm kub yog 512m. Txhawm rau txiav txim siab thaj chaw saum npoo ntawm a kub , xam cov cheeb tsam ntawm ib sab square, ces muab 6 vim muaj 6 sab.
Tus qauv rau saum npoo yog dab tsi?
Peb kuj tuaj yeem sau npe rau ntev (l), dav (w), thiab qhov siab (h) ntawm lub prism thiab siv cov qauv, SA = 2lw + 2lh + 2hw, los nrhiav thaj chaw saum npoo.
Pom zoo:
Dab tsi yog qhov kev sib raug zoo ntawm thaj chaw saum npoo thiab ntim ntawm lub voos xwmfab?
Rau qhov cubes me dua qhov no, thaj chaw saum npoo yog ntau dua piv rau qhov ntim ntau dua li nws nyob hauv qhov loj dua (qhov ntim ntau dua piv rau thaj chaw saum npoo). qhia meej meej tias raws li qhov loj ntawm ib yam khoom nce (tsis hloov pauv), qhov piv txwv no txo qis
Dab tsi yog qhov hloov pauv kev sib raug zoo ntawm ntim thiab thaj chaw saum npoo raws li qhov khoom loj dua?
Raws li lub voos xwmfab loj zuj zus los yog lub xov tooj ntawm tes tau loj dua, ces thaj tsam ntawm qhov ntim rau qhov sib piv - SA: V piv txo. Thaum ib yam khoom / cell me me, nws muaj thaj tsam loj rau qhov ntim piv, thaum lub khoom loj / cell muaj thaj tsam me me rau qhov ntim piv
Dab tsi yog qhov txawv ntawm qhov chaw thiab qhov chaw?
Raws li lub npe qhov txawv ntawm qhov chaw thiab qhov chaw yog qhov chaw yog (tso tseg) kev tu siab, kev tu siab orsite tuaj yeem yog qhov chaw uas txhua yam raug kho; qhov xwm txheej; txoj hauj lwm hauv zos; xws li, qhov chaw ntawm lub nroog los yog ntawm ahouse thaum qhov chaw yog ib qho chaw tshwj xeeb lossis qhov chaw nyob hauv lub cev
Dab tsi yog qhov kev sib raug zoo ntawm thaj chaw saum npoo thiab ntim ntawm ib lub sphere?
Rau ib tug kheej kheej, qhov chaw saum npoo yog S = 4 * Pi * R * R, qhov R yog lub vojvoog ntawm tus kheej thiab Pi yog 3.1415 Qhov ntim ntawm ib puag ncig yog V = 4 * Pi * R * R * R / 3. Yog li rau ib tug kheej kheej, qhov sib piv ntawm thaj chaw rau ntim yog muab los ntawm: S / V = 3 / R
Puas yog qhov ntim thiab qhov chaw saum npoo yog tib yam?
Qhov txawv ntawm qhov chaw thiab ntim yog dab tsi? Qhov chaw saum npoo yog qhov sib npaug ntawm thaj chaw ntawm txhua lub ntsej muag ntawm daim duab khoom. Nws yog ntsuas nyob rau hauv square units. Volume yog tus naj npawb ntawm cubic units uas ua kom muaj ib daim duab